An atom. Hope this helped
Answer:
The person above me is right i had a test a couple of days ago and thats kinda what u put and got it right!
A geocentric system is a part of the astronomical theory which describes the universe. Meaning that it puts the Earth in the CENTER of the universe as a point of view for other objects surrounding it.
Answer: inertial mass
The measure of resistance to motion by an object is the objects inertial mass